no 



STATE HORTICULTURAL SOCIETY. 



discovered. It is especially important that diseased trees should not 

 be allowed to blossom as it is believed the disease is spread by insects 

 at that time. Both old and yoimg trees of all varieties of peaches and 

 probably all varieties of Japanese plnms are susceptible to the two dis- 

 eases. Both diseases may be present in a tree at the same time. 



Peach Yellows. The first symptoms in a young tree, previous to 

 bearing, are indicated by the leaves of one or two limbs turning from 

 a rich dark green to a "yellowish green or reddish rusty green" color; 

 this is accompanied by a rolling of the leaves from their edges. These 



PEACH YELLOWS. 

 A six year old peach tree in an advanced stage of tlie "Yellows." 



leaves ripen and fall earlier than normal leaves. The fruit buds are 

 larger and more mature in appearance and in the spring will invariably 

 bloom earlier than healthy buds. In some instances, the symptons are 

 not confined to one or two branches, but many of the leaves in the 

 center of the tree turn yellowish or light green, roll slightly from their 

 edges and droop considerably. These latter symptoms are often present 

 in case of "Little Peach." 



Upon bearing trees, there may be any one or all of the following 

 symptoms: the fruit may ripen i)rematarely — one to three weeks — upon 

 one or two branches or over the entire tree. The fruit may have numerous 

 red spots on the surface, the spots sometimes extending in red streaks 

 partially or wholly through the flesh to the pit. Often the flesh, about 



